CriticalPublic exploit

Stack-based buffer overflow in Simple Web Server 2.2 rc2 Connection header handling

IdentifiersCVE-2012-10053CWE-121· Stack-based Buffer Overflow

CVE-2012-10053 is a stack-based buffer overflow in Simple Web Server 2.2 rc2. The flaw is triggered when the server processes an overly long value in the HTTP Connection header. According to the provided content, the vulnerable code uses vsprintf() without proper bounds checking, allowing attacker-controlled header data to overflow a stack buffer. Because the issue is reachable over the network during HTTP request processing and is triggered before authentication, a remote unauthenticated attacker can exploit it by sending a crafted request to the web server.

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ANALYST BRIEF

Impact, mitigation & remediation

What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.

Impact

What an attacker gets, and what they’ve been doing with it.

Successful exploitation can result in arbitrary code execution in the context of the Simple Web Server process. Depending on how the service is deployed, this may allow full compromise of the host under the privileges of the web server account, including installation of malware, data access or modification available to that account, and potential follow-on local privilege escalation or lateral movement.

Mitigation

If you can’t patch tonight, do this now.

If patching is not immediately possible, restrict network exposure of the web server to trusted clients or place it behind a reverse proxy or filtering device that enforces conservative maximum HTTP header lengths and rejects malformed or oversized Connection headers. Run the service with the least privileges possible, enable exploit mitigations supported by the platform such as stack canaries, ASLR, DEP/NX, and monitor for anomalous or crashing HTTP requests targeting header parsing.

Remediation

Patch, then assume compromise.

Upgrade from Simple Web Server 2.2 rc2 to a fixed version if one is available. The vulnerable request-handling code should be corrected to eliminate unbounded writes by replacing vsprintf() with a bounded alternative such as vsnprintf() and by enforcing strict length validation on HTTP header values, including the Connection header. Rebuild and redeploy the service after patching.

PUBLIC EXPLOITS

Exploits

2 valid exploits after Mallory filtered fakes, detection scripts, and README-only repos.

VALID 2 / 2 TOTALView more in app

somplplayer_m3u.rbMaturityWeaponizedFrameworkmetasploitVerified exploit

This repository contains a single Metasploit module (modules/exploits/windows/fileformat/somplplayer_m3u.rb) that exploits a buffer overflow vulnerability in Simple Open Music Player v1.0 (CVE-2012-10053). The exploit works by generating a specially crafted .m3u playlist file (default name: msf.m3u) containing a user-selected Metasploit payload. When this file is imported into the vulnerable player, a buffer overflow occurs, allowing arbitrary code execution with the privileges of the user running the application. The module allows for customizable payloads (up to 500 bytes, avoiding certain bad characters) and is fully integrated into the Metasploit framework, making it weaponized and easy to use. The attack vector is local, requiring the victim to open the malicious file. The only fingerprintable endpoint is the generated .m3u file. The repository is structured as a single Ruby file following Metasploit conventions.

Disclosed Jan 22, 2010rubylocal

sws_connection_bof.rbMaturityWeaponizedFrameworkmetasploitVerified exploit

This repository contains a single Metasploit module (modules/exploits/windows/http/sws_connection_bof.rb) that exploits a stack buffer overflow vulnerability in PMSoftware Simple Web Server (SWS) version 2.2 rc2. The exploit targets the handling of the HTTP 'Connection' header, where a specially crafted, overly long value triggers a buffer overflow via the vsprintf() function, allowing for arbitrary code execution. The module is designed for remote exploitation over HTTP and has been tested on Windows XP SP3 and Windows 7 SP1. The exploit is operational and allows the attacker to supply a custom Metasploit payload, such as a reverse shell, which is delivered in the Connection header of a GET request to the root URI ('/'). The module includes a check method to fingerprint the target server by matching the 'Server' HTTP header for 'PMSoftware-SWS'. The repository is structured as a typical Metasploit exploit module, written in Ruby, and leverages the Metasploit framework's payload and HTTP client capabilities.

Disclosed Jul 20, 2012rubynetwork

ACTIVITY FEED

Recent activity

3 sources tracked across advisories and community write-ups. News coverage will land here when it surfaces.

3 SOURCESView more in app

No news coverage yet. Advisories and community discussion only.

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Exposure mapping

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Threat actor evidence

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Associated malware

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Detection signatures

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Vendor-by-vendor mapping

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Social activity